You might want to further your research Taurine, it's one of the safest supplements on the market. Taurine is extremely beneficial with no known side effects, when taken without caffeine, up to 3g per day. It plays large roles in healthy cardiac function, healthy liver function, and muscular function and development.
I'm pretty sure at one time I stumbled across the article in which you've seen that taurine combined with caffeine was bad. If you ever read a supplement article, be sure to see what products that site offers. The supplement industry is notorious for misrepresenting research to benefit their product over competitors. Also, that study had given subjects something obscene amount of caffeine like 320-340mg or so.
Here's are a few good published research articles on it.
Role of Taurine when combined with Caffeine --- cliff, it was shown that "if there are any interactions between caffeine and taurine, taurine might reduce the cardiovascular effects of caffeine." Further research is needed to prove this.
The major impetus behind the rise in energy drink popularity among adults is their ability to heighten mental alertness, improve physical performance and supply energy. However, accompanying the exponential growth in energy drink usage have been recent case reports and analyses from the National...
pubmed.ncbi.nlm.nih.gov
Study of the roles of taurine in the body
Taurine (2-aminoethanesulphonic acid), a sulphur-containing amino acid, is found in most mammalian tissues. Although it can be synthesized endogenously, the major source of taurine is from the diet. Taurine was found to exhibit diverse biological actions, ...
www.ncbi.nlm.nih.gov